Eco-friendly bean flour films for sustainable food packaging

Q2 Materials Science
Daiane Nogueira, Natasha S Marasca, Juliana M Latorres, Vilásia G Martins
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引用次数: 0

Abstract

The use of natural polymers in packaging development is a promising alternative to solve the environmental problems associated with petroleum-based synthetic packaging. This study proposed the production and use of black and red bean flours as a non-conventional biopolymer matrix for the development of biodegradable films. Films with 10 and 25 g of film-forming solution of black bean and red bean flour (separately) were produced by the casting technique and characterized in terms of physical-chemical, barrier and structural properties. The film with 25 g of red bean flour film-forming solution showed a tensile strength of 9.5 MPa and a water solubility of 32.9%, higher values than the other films produced. Regarding the water vapor permeability, the formulation with 10 g of film-forming solution of red bean showed the lowest value (1.3 g.mm/h.m 2 .kPa) when compared to the value of 2.3 g.mm/h.m 2 .kPa for the formulation with 25 g of film-forming solution of red bean. The films presented similar relative crystallinity and a predominantly homogeneous surface. All films presented total biodegradability in 14 days in soil, and 20 days in sea water. The red bean flour films presented better mechanical and barrier properties, and also were able to be sealed and printed. It is believed that this packaging could be used to package products such as olive oil, because in addition to containing the product, its low transparency could prevent oxidative processes caused by the light incidence.
环保豆粉薄膜,可持续食品包装
在包装开发中使用天然聚合物是解决与石油基合成包装相关的环境问题的一个有前途的选择。本研究提出以黑豆粉和红豆粉为非传统生物聚合物基质,生产和使用生物可降解薄膜。采用浇铸法制备了黑豆成膜液和红豆成膜液(分别为10和25 g),并对其理化性能、阻隔性和结构性能进行了表征。加入25 g红豆粉成膜液制备的膜抗拉强度为9.5 MPa,水溶性为32.9%,均高于其他膜。水蒸气渗透率方面,加入10 g红豆成膜液的配方最低(1.3 g.mm/h)。2. kpa),与2.3 g.mm/h的值相比。以25g红豆成膜液为配方,m 2 . kpa。膜具有相似的相对结晶度和主要均匀的表面。所有膜在土壤中14 d完全生物降解,在海水中20 d完全生物降解。制备的红豆粉薄膜具有较好的机械性能和阻隔性能,并具有良好的密封和印刷性能。据信,这种包装可以用来包装橄榄油等产品,因为除了含有该产品外,其低透明度可以防止光入射引起的氧化过程。
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来源期刊
Polymers from Renewable Resources
Polymers from Renewable Resources Materials Science-Polymers and Plastics
CiteScore
3.50
自引率
0.00%
发文量
15
期刊介绍: Polymers from Renewable Resources, launched in 2010, publishes leading peer reviewed research that is focused on the development of renewable polymers and their application in the production of industrial, consumer, and medical products. The progressive decline of fossil resources, together with the ongoing increases in oil prices, has initiated an increase in the search for alternatives based on renewable resources for the production of energy. The prevalence of petroleum and carbon based chemistry for the production of organic chemical goods has generated a variety of initiatives aimed at replacing fossil sources with renewable counterparts. In particular, major efforts are being conducted in polymer science and technology to prepare macromolecular materials based on renewable resources. Also gaining momentum is the utilisation of vegetable biomass either by the separation of its components and their development or after suitable chemical modification. This journal is a valuable addition to academic, research and industrial libraries, research institutions dealing with the use of natural resources and materials science and industrial laboratories concerned with polymer science.
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